Commit cce0ab2b authored by Zhu Lingshan's avatar Zhu Lingshan Committed by Michael S. Tsirkin
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vhost_vdpa: don't setup irq offloading when irq_num < 0 



When irq number is negative(e.g., -EINVAL), the virtqueue
may be disabled or the virtqueues are sharing a device irq.
In such case, we should not setup irq offloading for a virtqueue.

Signed-off-by: default avatarZhu Lingshan <lingshan.zhu@intel.com>
Link: https://lore.kernel.org/r/20220222115428.998334-3-lingshan.zhu@intel.com


Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
parent 8897d6d0

drivers/vhost/vdpa.c

+4 −1
Original line number Diff line number Diff line
@@ -97,8 +97,11 @@ static void vhost_vdpa_setup_vq_irq(struct vhost_vdpa *v, u16 qid) 
		return;



	irq = ops->get_vq_irq(vdpa, qid);

	if (irq < 0)

		return;



	irq_bypass_unregister_producer(&vq->call_ctx.producer);

	if (!vq->call_ctx.ctx || irq < 0)

	if (!vq->call_ctx.ctx)

		return;



	vq->call_ctx.producer.token = vq->call_ctx.ctx;